High-powered lock nut



June 9, 1953 E. v. MORLEY HIGH-POWERED LOCK NUT 2 Sheets-Sheet 1 FiledApril 24, 1950 INVENTOR.

E A R L. E ICTOR Mo R LEV AT TORN EYS June 9, 1953 V M RL Y 2,641,293

HIGH POWERED LOCK NUT Filed April 24, 1950 2 Sheets-Sheet 2 INVENTOR.EARLS VICTOR MQRLEY A'vToRNEYs Patented June 9, 1953 nmrs-e sures OFFICEHIGH?POWERED LOCKv NUT Q-EaFleMVictorQ Morley, Oakland; 'GaIif.

" ApplicatitmApl ifwl, 1950', SBriaN-In: 157,834

Lingadapted-toe dropforge, hot or cold-pressed methdd ofproduction.

More spebi'fic'a1ly described; the spring L'lock wa'sher is providedwith raised portions and i a spring toe, *whi'ch enter notches"fashioned in *theflanged nut. 'In" the 'event I that this 'toe shouidmeanwhile "in *service, the raise'd*-*portions of "the Washer wilhberetained" in the notches, absorbing vibration and restraining theflanged nut againstloosening.

Other objects and advantages will appear as 'the" specificationcontinues, and the novel-Teatures-wiltbe set' forth in" the claimshereunto appended.

This application is a continuation-impart of -"my- 'e'a'r1ier*cop'endin'g case, Seria1"-No. 73932, 'n'ewr abandonedfffled'in theUrIite'd States -Patent' Oificeoir-February 1, i949.

For a"bet-ter' understanding"of' this invention, reference'fshoifld "behad tothe accompanying drawings,' -'forrn.ing part of this rapplication, in which:

Figure 1' is'anielevational viewbf abolthaving my highpowerd--1ock-'-nut=-app1ied* thereto;

Figuris a top' plan View oftheifiangedenut; '--Fi'gure" 3' is an*e1evationa1 view of the'fiang'd mit; pafr-tly in section;

Figure 4 is a top plan view of the bushe'dring; fi igure 5 is anelevationai View of Figure 4;

Figure 6 is an 'enlargedview disclosing the '--manner in which '-'thespring lock washer is ="*forced"=-into engagement with the bushd'ring;

Figure 71 isa View similar to Figure 1, and' i1- Plustrating one ofthe'raised portionsoffi'the spring ltfok washer confined in "a notch ofthe flanged nut and restraining thenut tr'om turningsshould the :toe' ofthe I springflwash'er i become: broken --whilezirtruse;

-:"E1'jgu1e fitan :elevational view of= ithei'bu'shed ring having thehigh-poweredspring lock =washer anchoredtthereto i2 figures-9i and-10are;.p1an views of modified wings and UFBigu-re ..11. is!azmodification .of the ring and spring washer, a designed to eliminate.the .need

-.of'\.a tool: to release the spring toev from .theinotch.

"While I have shown only theppreferred'forms of my invention, it;shouldxbe understood that various changes: .oramodificationsamaybee-made "within ltheuscop-eiiofa the appended c1aims .=w'ithoutideparting (fromthe. spirit thereof.

Referring to the. drawings l. .showiaubolt, indieated generally: atMA.This -bolt -.vinc1udes;a ahead L and i a shank 2, the latter-shaving?itsiupportend threaded as at3.

.iIn carryingeout iaestep-byestep description of my invention, Lshow atnut. .B endear/flange 4 .imadei in onepiece. .The underneath face"5.oflthisilfiangemontains /a .number of not'chesbli. I show thebuterdiameter of .the fiangeA as ex- 'ceeding" the maximum width of'the' nutbetween diametrically-opposed apexes 1 of the nut. (see Figure"2)."'The'fiangef4*contains a bore' 8. 'The "depth of'theioore" 8 equals thethickness or the flange 4, but*maybe' made to any'depth, with height ofa bushing 2| altered to'accord.

Figures 1,3' and7,'l? show the flanged'nut, "-"vvi'th' the notches-*5having a base 9' parallel with "the-face 5of the flanged nut. "The endwalls I E3 er these "notches" areshown asforming an ob- T I I" of a*highmowered spring washer- C may be lowered for reniovalf"thefianged'nut.

A ringZTD' is? shown" as: containing a peripheral :tlciistbed:ibysmeans: or: a. hook-shapeddownward "extension I dfiencaserh diametricr;slot I 5.:ext'ending acrossztherwidth ofthet-bed. xTheqspringn-w-ashen-C is eorrugated-" when Tin; its-natural: state tireetofipressure (seefFigure 8). When the 1s raised portion :1 6 er the:highr-powered spring Washer 150 "nearest: the downward '1 extension 'I4 springsa upz normal1y;:whi1e"'free from. the: pressuTe'TJf' the:fiangerh the downward: extension 14 4 *rbec'omes" iocked to theaangular wall i'lvof the slot: '1 5. :iThe' spring washer isprovidedwith three a of atherraised portions: it; which" correspond: to i. thespacings ofithe notches 6.

:Forthe purposerofiassembly, thespring washer H5431 C :is :pressed. tothe bed i3qby ahydraulic device E or'other means (see Figure-fiy-so'that the-downwarol extension -I 4 is 'verticaL'thus foroing-itinto theslot [5. Upon release of pressure, the highpowered :springcwasher'is;locked to the? ring D 5;, :(see Figure 8) Y The end 4101? thespringwasher C abutting against a bulkhead IQ of the ring D is providedwith a groove |4a coacting with a shoulder l9a in the bulkhead l9 as afulcrum to facilitate entry of the toe |4 into the slot l5.

Due to the spreading factor, the outside diameter d of the bed |3 (seeFigure 4) should be greater than the outside diameter of the springwasher C when not in use. The distance from the bed |3 to the top |8 ofthe retaining wall I2 is shown as being about one-half the thickness ofthe spring washer.

The bulkhead |9 rises adjacent to the diametric slot to prevent thespring washer from revolving with the flanged nut should the extension|4 break off while in service. This bulkhead also serves as arestraining factor in keeping the extension |4 pressed against theangular wall I1, thus retaining the spring washer in the ring when notin use (see Figure 8) The angle of the slightly-curved wall of thebulkhead (see Figure 6) should be such that the raised portion I!) ofthe spring washer C nearest the downward extension l4 will be allowed toresume its normal height when not in use. The wall 20 is shown as havinga slightly steeper angle than the angular wall I I.

A bushing 2| rises from the inside diameter of the bed |3 to asufficient height so that the top 22 of this bushing presses flush tothe seat 23 (see Figure 3) of the bore 8 while the spring washer C ispressed down by the flange 4. Four curved gables, indicated at 24 (seeFigures 4, 5 and 8) extend from the bottom surface 25 of the ring D,directly under the bushing 2|, and are adapted to penetrate, to someextent, the surface of the object F under revolving pressure of the seat23 upon the top surface 22 of the bushing 2|. The bushing 2| is bevelledon its outer edge at 26 (see Figure 5) to facilitate fitting thisbushing to the bore 8.

The high-powered spring washer C has an upturned toe previouslymentioned, which is adapted to enter the recesses '6 to provide aratchet-pawl arrangement. The spring toe allows the nut B to betightened upon the threaded shank 2 of the bolt A, but will arrestloosening of the nut. The end 21 of the toe I is sufficiently spacedfrom the bulkhead l9 so that this toe will arrest loosening of theflanged nut while the three high spots N5 of the spring washer areretained in three equally spaced notches 6.

In Figure '7 an arrangement is shown whereby, should the spring toebreak while in service, the raised portions l6 of the spring washer C,retained in the notches 6, will absorb vibration and restrain theflanged nut from turning. A break in the spring washer is suggested at28. The spacing of the notches 6 is equalized (see Figure 2) so that thespring toe H and the high spots IE will spring into the notches witheach quarter turnof the flanged nut. Accordingly, the spring toe I isspaced from the bulkhead H). An opening 29 through the bed I 3 permitsthe toe l to be released freely. The end walls In of the notches Bconjoin with a taper-off 30 to prevent shearing the spring washer C whenthe flanged nut is loosened. The top edge of the toe is beveled at 3| tofacilitate release of the flanged nut (see Figure 8). The bottom edge 32of the spring toe II should clear the top edge 33 of the opening 29nearest to the bulkhead l9 (see Figures 4, 5 and 8).

In the event the spring washer should break at one of the low spots 34,the remainder can be removed by punching out the downward extension I4from the reverse side of the slot [5.

I show the upper edge 35 of the angular wall II, where it converges withthe bed I3, as being rounded to prevent chipping, should it becomenecessary to remove the spring washer (see Figure 6).

In consideration of its conjunction with the bushing 2|, the insidediameter of the seat 8 should be greater than the root diameter RD ofthe nut threads 36 (see Figure 3). These threads may be of any suitabletype.

Arcuate gables 31 project from the bottom surface 25 of the ring D. Itwill be understood that the arcuate gables 31, when applied to a metalsurface, will support pressure exerted by the hi-powered spring washerC, while the bottom edges 38 of the curved gables 24 (see Figure 5) willpenetrate the metal surface to some extent under revolving pressure ofthe flanged nut.

In Figure 9, I show a modified ring DI having a number of radial gables39 extending outward from the inside diameter 40 of the ring DI. Thismodification is intended to meet a condition where the diameter of thebore 4| in the object F is greater than the bottom edges 38 of thecurved gables 24 which they replace (see Figure 5).

Figure 10 illustrates another modified .ring D2 having a plurality ofpyramids 42 projecting downwardly from its underneath surface. Thesepyramids are adapted to enter the object F to preclude the ring D2 fromturning.

Figure 11 illustrates a modification of the ring and spring washer,designed to eliminate the need of a tool for releasing the spring toe Ifrom the notch B. The bottom end of the downwardly turned spring toe 43in this modification is rounded for a sliding movement under pressure,and the opening 29, previously described, is eliminated. In Figure 11,the flange 44 is provided with four curved notches 45 arranged toreceive a corresponding number of raised portions 46 of the modifiedspring washer CI.

The component parts of this device, either in the preferred form, or themodifications, may be case-hardened, either fully or in part. Thedimensions of the various parts of this device may be modified asdesired.

- I claim:

1. In a lock nut: a ring adapted to receive a shank of a bolt; the ringhaving a radial slot therein with an angular wall; and aresilient splitwasher having a hook-shaped end adapted to enter the slot and a raisedcurved'portion disposed adjacent to the hook; the angle of the hookbeing greater than the angular wall of the slot so that the curvedportion has to be momentarily flattened to permit the hook to enter theslot; the curved portion upon returning to normal position, holding thehook against the angular wall of the slot for anchoring the washer tothe ring.

2. In a lock nut: a ring adapted to receive a shank of a bolt; the ringhaving a radial slot therein with an angular Wall; and a resilient splitWasher having a hook-shaped end adapted to enter the slot and a raisedcurved portion disposed adjacent to the hook; the angle of the hookbeing greater than the angular Wall of the slot so that the curvedportion has to be momentarily flattened to permit the hook to enter theslot; the curved portion upon returning to normal position, holding thehook against the angular wall of the slot for anchoring the washer tothe ring; the other end of the washer being 5 turned in an oppositedirection to the hook to constitute a spring pawl.

3. In a lock nut: a ring adapted to receive a shank of a bolt; the ringhaving an annular washer-receiving bed; the ring having a radial slot inits bed with an angular wall; and a resilient split washer disposed inthe bed and having a hook haped adapted to enter the slot; the washer araised curved portion disposed adjacent to the hook; the angle of thehook being greater than the angular wall of the slot so that the curvedportion has to be momentarily flattened to permit the hook to enter theslot; the curved portion upon returning to normal position, holding thehook against the angular wall of the slot for anchoring the washer tothe ring; the other end of the washer being turned downwardly andslidably resting on the bed.

4. In a lock nut: a ring adapted to receive a shank of a bolt; the ringhaving a radial slot therein with an angular wall; the top of said ringhaving a shoulder in the slot opposite the angular wall; and a resilientsplit washer having a hook-shaped end substantially of the same width asthe circumferential width of the slot but inclined at a greater anglethan said angular wall and adapted. to enter the slot when at the sameinclination as said angular Wall and having a groove to receive theshoulder of the 30 ring as the hook is inserted into the slot; thewasher having a curved raised portion disposed adjacent to the hook sothat the curved portion has to be momentarily flattened to permit thehook to enter the slot; the groove and shoulder coasting to provide afulcrum for swinging the 6 hook into a position for sliding the innerwall thereof under the angular wall as the hook is pressed into theslot; the curved portion holding the inner wall of the hook against theangular wall of the slot for anchoring the washer to the ring.

5. In a lock nut: a nut adapted to be screwed onto the threaded shank ofa bolt; the inner surface of the nut having notches therein; a ringsurrounding the bolt shank and interposed between the nut and an objectthrough which the shank extends; the ring having a radial slot thereinand having projections adapted to engage with the object for preventingrotation of the ring; and a split spring washer having a hook-shaped endanchored in the slot for securing the washer to the ring as a unit; thewasher bein corrugated and defining raised portions yieldinglyprojecting into the notches of the nut; one of the raised portions beingdisposed adjacent to the hook, the angle of the hook being greater thanthe angular wall of the slot so that this portion has to he momentarilyflattened to permit the hook to enter the slot.

EARLE VICTOR MORLEY.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 150,801 Sykes May 12, 1874 348,569 McHugh Sept. 7, 1886688,273 Ward Dec. 3, 1901 1,019,215 Barclay Mar. 5, 1912 1,210,758 BrandJan. 2, 1917 1,616,338 Steinkritzer n Feb. 1, 1927

